refactor(OnlineLearningMonitorPage): 更新学生层次标签映射和模拟数据

更新学生层次标签的映射关系，将字母等级改为中文描述（本科/特控/拔尖），并相应调整模拟数据生成逻辑

.codebuddy/integration/eop.json

@@ -2,9 +2,9 @@
   "projectName": "aixuediebian-kanban",
   "projectId": "pages-eip23arpzoar",
   "deployUrl": "https://aixuediebian-kanban-3fzkam9s.edgeone.cool",
-  "previewUrl": "https://aixuediebian-kanban-3fzkam9s.edgeone.cool?eo_token=500f76b21d03fd0693ba2f52f2757888&eo_time=1776404056",
+  "previewUrl": "https://aixuediebian-kanban-3fzkam9s.edgeone.cool?eo_token=b031f95a37e464d8136c7b05c538134a&eo_time=1776657450",
   "consoleUrl": "https://console.cloud.tencent.com/edgeone/pages/project/pages-eip23arpzoar/index",
-  "deploymentUrl": "https://console.cloud.tencent.com/edgeone/pages/project/pages-eip23arpzoar/deployment/4dxuaw1yre",
-  "deployId": "4dxuaw1yre",
-  "lastDeployTime": 1776404056
+  "deploymentUrl": "https://console.cloud.tencent.com/edgeone/pages/project/pages-eip23arpzoar/deployment/bwv8jbp4hj",
+  "deployId": "bwv8jbp4hj",
+  "lastDeployTime": 1776657450
 }

src/components/OnlineLearningMonitorPage.vue

@@ -1026,10 +1026,9 @@ const getCourseStatusClass = (status) => {
 // 获取层次标签主题色
 const getLevelTheme = (level) => {
   const themeMap = {
-    'A': 'success',
-    'B': 'primary',
-    'C': 'warning',
-    'D': 'danger'
+    '本科': 'primary',
+    '特控': 'success',
+    '拔尖': 'warning'
   }
   return themeMap[level] || 'default'
 };
@@ -1199,7 +1198,7 @@ const studentColumns = computed(() => [
 // 生成模拟学生数据
 const generateStudentData = (courseIndex) => {
   const names = ['张三', '李四', '王五', '赵六', '钱七', '孙八', '周九', '吴十', '郑十一', '陈十二', '刘明', '黄强', '林娜', '杨帆', '何静'];
-  const levels = ['A', 'B', 'C', 'D'];
+  const levels = ['本科', '特控', '拔尖'];
   const data = [];
   
   for (let i = 0; i < 25; i++) {